Updated Definition and Correlation of the Lower Fifteenmile Group in the Central and Eastern Ogilvie Mountains
Ongoing mapping, chemostratigraphy, geochronology, and stratigraphic analysis of Neoproterozoic successions in the Ogilvie Mountains requires redefinition and correlation of the Fifteenmile Group across the Proterozoic inliers in Yukon. Here we present new stratigraphic logs through the lower Fiftee...
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Yukon Geological Survey
2012
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ftharvardudash:oai:dash.harvard.edu:1/33717503 2023-05-15T17:52:26+02:00 Updated Definition and Correlation of the Lower Fifteenmile Group in the Central and Eastern Ogilvie Mountains Halverson, Galen P. Macdonald, Francis Alexander Strauss, Justin Vincent Smith, Emily F. Cox, Grant M. Hubert-Théou, Lucie 2012 application/pdf http://nrs.harvard.edu/urn-3:HUL.InstRepos:33717503 en_US eng Yukon Geological Survey http://ygsftp.gov.yk.ca/publications/yeg/yeg11/YEG2011.pdf http://projects.iq.harvard.edu/files/fmacdonald/files/2012_updated_definition_and_correlation.pdf Yukon Exploration & Geology 2011 Quick submit: 2014-02-22T21:23:09-05:00 Halverson, Galen P., Francis A. Macdonald, Justin V. Strauss, Emily F. Smith, Grant M. Cox, and Lucie Hubert-Théou. 2012. Updated Definition and Correlation of the Lower Fifteenmile Group in the Central and Eastern Ogilvie Mountains. In Yukon Exploration & Geology 2011, ed. K.E. MacFarlane and P.J. Sack, 75-90. Whitehorse, Yukon Geological Survey. 1718-8326 http://nrs.harvard.edu/urn-3:HUL.InstRepos:33717503 Galen P. Halverson, Francis A. Macdonald, Justin V. Strauss, Emily F. Smith, Grant M. Cox, Lucie Hubert-Théou Monograph or Book 2012 ftharvardudash 2022-04-04T12:46:31Z Ongoing mapping, chemostratigraphy, geochronology, and stratigraphic analysis of Neoproterozoic successions in the Ogilvie Mountains requires redefinition and correlation of the Fifteenmile Group across the Proterozoic inliers in Yukon. Here we present new stratigraphic logs through the lower Fifteenmile Group in the Coal Creek and Hart River inliers. Based on these data and new observations, we propose redefinition of the lower Fifteenmile Group. A succession dominated by sandstone, mapped as unit PPD1 in the Hart River inlier, is now recognized at the base of the Fifteenmile Group in the Coal Creek inlier. These strata unconformably overlie the Pinguicula Group and transition upward into a distinctive carbonate interval; together, these comprise the informally defined Gibben formation. The shallowing-upward carbonate sequence contains abundant oolitic grainstone and packstone and microbial laminated dolostone. It is capped by a distinct interval of mud-cracked maroon mudstone, siltstone, and fine-grained sandstone that forms the base of what we informally define as the Chandindu formation. The mud-cracked shale transitions upwards into interbedded shale, coarse-grained sandstone, and minor carbonate. The overlying informally defined Reefal assemblage consists of up to 1 km of complexly interbedded carbonate and shale, with variable truncation beneath the major angular unconformity at the base of the Callison Lake Dolostone. The lower Fifteenmile Group (now informally PPD1 through the Chandindu formation) likely correlates with the Hematite Creek Group in the Wernecke Mountains. Earth and Planetary Sciences Version of Record Other/Unknown Material Ogilvie Mountains Yukon Harvard University: DASH - Digital Access to Scholarship at Harvard Yukon Ogilvie ENVELOPE(-139.746,-139.746,63.563,63.563) Ogilvie Mountains ENVELOPE(-138.254,-138.254,64.583,64.583) Wernecke ENVELOPE(-135.271,-135.271,63.952,63.952) Hart River ENVELOPE(-136.382,-136.382,65.854,65.854) Wernecke Mountains ENVELOPE(-134.254,-134.254,64.833,64.833) Callison Lake ENVELOPE(-129.698,-129.698,59.229,59.229) Hematite Creek ENVELOPE(-133.387,-133.387,64.633,64.633) |
institution |
Open Polar |
collection |
Harvard University: DASH - Digital Access to Scholarship at Harvard |
op_collection_id |
ftharvardudash |
language |
English |
description |
Ongoing mapping, chemostratigraphy, geochronology, and stratigraphic analysis of Neoproterozoic successions in the Ogilvie Mountains requires redefinition and correlation of the Fifteenmile Group across the Proterozoic inliers in Yukon. Here we present new stratigraphic logs through the lower Fifteenmile Group in the Coal Creek and Hart River inliers. Based on these data and new observations, we propose redefinition of the lower Fifteenmile Group. A succession dominated by sandstone, mapped as unit PPD1 in the Hart River inlier, is now recognized at the base of the Fifteenmile Group in the Coal Creek inlier. These strata unconformably overlie the Pinguicula Group and transition upward into a distinctive carbonate interval; together, these comprise the informally defined Gibben formation. The shallowing-upward carbonate sequence contains abundant oolitic grainstone and packstone and microbial laminated dolostone. It is capped by a distinct interval of mud-cracked maroon mudstone, siltstone, and fine-grained sandstone that forms the base of what we informally define as the Chandindu formation. The mud-cracked shale transitions upwards into interbedded shale, coarse-grained sandstone, and minor carbonate. The overlying informally defined Reefal assemblage consists of up to 1 km of complexly interbedded carbonate and shale, with variable truncation beneath the major angular unconformity at the base of the Callison Lake Dolostone. The lower Fifteenmile Group (now informally PPD1 through the Chandindu formation) likely correlates with the Hematite Creek Group in the Wernecke Mountains. Earth and Planetary Sciences Version of Record |
format |
Other/Unknown Material |
author |
Halverson, Galen P. Macdonald, Francis Alexander Strauss, Justin Vincent Smith, Emily F. Cox, Grant M. Hubert-Théou, Lucie |
spellingShingle |
Halverson, Galen P. Macdonald, Francis Alexander Strauss, Justin Vincent Smith, Emily F. Cox, Grant M. Hubert-Théou, Lucie Updated Definition and Correlation of the Lower Fifteenmile Group in the Central and Eastern Ogilvie Mountains |
author_facet |
Halverson, Galen P. Macdonald, Francis Alexander Strauss, Justin Vincent Smith, Emily F. Cox, Grant M. Hubert-Théou, Lucie |
author_sort |
Halverson, Galen P. |
title |
Updated Definition and Correlation of the Lower Fifteenmile Group in the Central and Eastern Ogilvie Mountains |
title_short |
Updated Definition and Correlation of the Lower Fifteenmile Group in the Central and Eastern Ogilvie Mountains |
title_full |
Updated Definition and Correlation of the Lower Fifteenmile Group in the Central and Eastern Ogilvie Mountains |
title_fullStr |
Updated Definition and Correlation of the Lower Fifteenmile Group in the Central and Eastern Ogilvie Mountains |
title_full_unstemmed |
Updated Definition and Correlation of the Lower Fifteenmile Group in the Central and Eastern Ogilvie Mountains |
title_sort |
updated definition and correlation of the lower fifteenmile group in the central and eastern ogilvie mountains |
publisher |
Yukon Geological Survey |
publishDate |
2012 |
url |
http://nrs.harvard.edu/urn-3:HUL.InstRepos:33717503 |
long_lat |
ENVELOPE(-139.746,-139.746,63.563,63.563) ENVELOPE(-138.254,-138.254,64.583,64.583) ENVELOPE(-135.271,-135.271,63.952,63.952) ENVELOPE(-136.382,-136.382,65.854,65.854) ENVELOPE(-134.254,-134.254,64.833,64.833) ENVELOPE(-129.698,-129.698,59.229,59.229) ENVELOPE(-133.387,-133.387,64.633,64.633) |
geographic |
Yukon Ogilvie Ogilvie Mountains Wernecke Hart River Wernecke Mountains Callison Lake Hematite Creek |
geographic_facet |
Yukon Ogilvie Ogilvie Mountains Wernecke Hart River Wernecke Mountains Callison Lake Hematite Creek |
genre |
Ogilvie Mountains Yukon |
genre_facet |
Ogilvie Mountains Yukon |
op_relation |
http://ygsftp.gov.yk.ca/publications/yeg/yeg11/YEG2011.pdf http://projects.iq.harvard.edu/files/fmacdonald/files/2012_updated_definition_and_correlation.pdf Yukon Exploration & Geology 2011 Quick submit: 2014-02-22T21:23:09-05:00 Halverson, Galen P., Francis A. Macdonald, Justin V. Strauss, Emily F. Smith, Grant M. Cox, and Lucie Hubert-Théou. 2012. Updated Definition and Correlation of the Lower Fifteenmile Group in the Central and Eastern Ogilvie Mountains. In Yukon Exploration & Geology 2011, ed. K.E. MacFarlane and P.J. Sack, 75-90. Whitehorse, Yukon Geological Survey. 1718-8326 http://nrs.harvard.edu/urn-3:HUL.InstRepos:33717503 |
op_rights |
Galen P. Halverson, Francis A. Macdonald, Justin V. Strauss, Emily F. Smith, Grant M. Cox, Lucie Hubert-Théou |
_version_ |
1766159866746896384 |